package main

import (
	"fmt"
	"unsafe"
)

func main() {
	var num1 int8 = 123
	fmt.Println("num1:", num1)

	var num2 int8 = -20
	fmt.Println("num2:", num2)

	var num3 = 28
	fmt.Printf("num3的类型是: %T", num3)
	fmt.Println()
	fmt.Println(unsafe.Sizeof(num3))
}
